Have you noticed a blue color "Free Voice Call" icon that appears next to your Facebook contacts in the iOS and Android Facebook Messenger app?

Yes, Facebook has updated their Messenger app that includes the ability to make free voice calls to your online pals and now Facebook users can simply tap the phone icon to call their friends.

FACEBOOK DITCH WHATSAPP OVER CALLING FEATURE

WhatsApp was reportedly developing voice call feature since last year and when it was acquired by Facebook for $19 billion in February, users estimated that Facebook will add Internet calling feature to Whatsapp soon, rather than to its own Facebook Messenger.

However, the WhatsApp VoIP calling is still to come and is expected to launch the update with the feature in the coming weeks, but sadly before that Facebook may leave other popular free calling apps, such as Viber, Line, Google's Hangout, Skype behind.

USERS' PRIVACY AT RISK, AS NO ENCRYPTION

As expected, Facebook Calling service is not Encrypted at all and efforts of NSA and Edward Snowden's revelations realize all of us that there is no such thing as 'Privacy'.

If recent reports are to be believed, NSA's spying powers are vast and they could once again put their special Hacking Units on this new assignment to Intercept your Facebook's Internet voice calls.

Free apps are Good, and Cost you nothing other than collecting your mass information. Big companies are using free Smartphone apps as a sweet weapon to allow them to spy on users’ text messages, intercept calls and even track their location.

From last eight months, the whole Internet is learning about encryption technologies, privacy tools and countermeasures to beat spying eyes, but using one 'Free Chocolate Donut' like app would make your efforts 'all in vain'!

GET MORE FEATURES

The voice-calling feature on Facebook Messenger was first arrived for iOS platform in January 2013 and then slowly rolled out to the users in US, UK and Canada.

These are some nice features Facebook introduced in the messaging app, including the ability to create group chats within the app and message forwarding feature.

The company rolled out the latest Facebook Messenger 4.0 update and is now available for free download in the Google Playstore. However, the Windows Phone version has not yet been updated with calling feature.